What is the cheapest airline that flies from Colorado to Sofia?

Turkish Airlines, Lufthansa, and British Airways are the most popular carriers operating from Colorado to Sofia

How long does it take to fly to Sofia?

Flight times vary depending on what airport in Colorado you fly out of and what airport in Sofia you fly into. For example, flying from Denver to Sofia takes 20h on average. On the other hand, flying from Grand Junction to Sofia takes 24h 50m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What airlines fly to Sofia?

Turkish Airlines, United Airlines and Lufthansa are the top three most popular airlines that fly to Sofia from Colorado according to our data. Turkish Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 3 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Colorado to Sofia Airport?

Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to Sofia Airport?

As of November 2025, there are 3 operators available to choose from for flights from Colorado to Sofia Airport.

How old do you have to be to fly from Colorado to Sofia Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.

What documentation or ID do you need to fly to Sofia Airport?

The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$286 Cheap Flights from Colorado to Sofia in 2025/26

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Cheap round-trip flights

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7:20 pm - 3:10 pmDEN-SOF

34h 50m1 stop

4:00 pm - 5:35 pmSOF-DEN

34h 35m1 stop

$566Turkish Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

8:25 pm - 3:00 pmDEN-SOF

33h 35m1 stop

9:35 am - 6:20 pmSOF-DEN

17h 45m1 stop

$593Turkish Airlines

Find Deal

Thu, Apr 9 - Thu, Apr 23

6:40 pm - 1:30 pmDEN-SOF

33h 50m1 stop

9:10 pm - 4:35 pmSOF-DEN

28h 25m1 stop

$632British Airways

Find Deal

Wed, Apr 1 - Sun, Apr 5

11:15 am - 10:10 pmDEN-SOF

25h 55m2 stops

4:45 pm - 4:00 pmSOF-DEN

32h 15m2 stops

$634Multiple Airlines

Find Deal

Mon, Dec 8 - Tue, Dec 23

1:20 pm - 11:10 pmGJT-SOF

24h 50m2 stops

7:25 pm - 8:27 pmSOF-GJT

34h 02m2 stops

$647Lufthansa

Find Deal

Wed, Apr 1 - Sun, Apr 5

12:20 pm - 2:00 pmDEN-SOF

16h 40m2 stops

7:00 am - 7:58 pmSOF-DEN

21h 58m2 stops

$649KLM

Find Deal

Thu, Apr 9 - Thu, Apr 23

3:40 pm - 9:50 amDEN-SOF

33h 10m3 stops

5:00 am - 6:05 pmSOF-DEN

22h 05m3 stops

$667Multiple Airlines

Find Deal

Thu, Dec 4 - Thu, Dec 11

5:45 pm - 10:45 pmDEN-SOF

20h 00m2 stops

5:45 am - 7:55 pmSOF-DEN

23h 10m2 stops

$685Multiple Airlines

Find Deal

Sun, Nov 30 - Thu, Dec 11

6:30 am - 2:00 pmDEN-SOF

22h 30m2 stops

7:00 am - 10:49 pmSOF-DEN

24h 49m2 stops

$751KLM

Find Deal

Wed, Apr 1 - Sun, Apr 5

11:15 am - 6:40 pmDEN-SOF

22h 25m2 stops

6:10 am - 3:35 pmSOF-DEN

18h 25m1 stop

$780Lufthansa

Find Deal

Thu, Apr 9 - Thu, Apr 23

Lufthansa flights from Colorado to Sofia

Our best Lufthansa deals on Colorado to Sofia flight tickets

Lufthansa

Apr 1

GJT1:20 pmGrand Junction Regnl

24h 50m

2 stops

SOF11:10 pmSofia

Apr 5

SOF7:25 pmSofia

34h 02m

2 stops

GJT8:27 pmGrand Junction Regnl

$647

Find similar

Lufthansa

Apr 9

DEN11:15 amDenver Intl

22h 25m

2 stops

SOF6:40 pmSofia

Apr 23

SOF6:10 amSofia

18h 25m

1 stop

DEN3:35 pmDenver Intl

$780

Find similar

Lufthansa

Dec 8

DEN4:20 pmDenver Intl

21h 25m

1 stop

SOF10:45 pmSofia

Dec 23

SOF6:00 amSofia

19h 00m

1 stop

DEN4:00 pmDenver Intl

$802

Find similar

Turkish Airlines flights from Colorado to Sofia

Our best Turkish Airlines deals on Colorado to Sofia flight tickets

Turkish Airlines

Dec 4

DEN7:20 pmDenver Intl

34h 50m

1 stop

SOF3:10 pmSofia

Dec 11

SOF4:00 pmSofia

34h 35m

1 stop

DEN5:35 pmDenver Intl

$566

Find similar

Turkish Airlines

Apr 9

DEN8:25 pmDenver Intl

33h 35m

1 stop

SOF3:00 pmSofia

Apr 23

SOF9:35 amSofia

17h 45m

1 stop

DEN6:20 pmDenver Intl

$593

Find similar

Turkish Airlines

Dec 13

DEN7:20 pmDenver Intl

34h 50m

1 stop

SOF3:10 pmSofia

Jan 7

SOF4:00 pmSofia

34h 35m

1 stop

DEN5:35 pmDenver Intl

$758

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 12/4

7:20 pm-3:10 pm

1 stop34h 50m

Sofia

Thu 12/11

4:00 pm-5:35 pm

1 stop34h 35m

$566

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 4/9

8:25 pm-3:00 pm

1 stop33h 35m

Sofia

Thu 4/23

9:35 am-6:20 pm

1 stop17h 45m

$593

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 4/1

6:40 pm-1:30 pm

1 stop33h 50m

Sofia

Sun 4/5

9:10 pm-4:35 pm

1 stop28h 25m

$632

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Mon 12/8

11:15 am-10:10 pm

2 stops25h 55m

Sofia

Tue 12/23

4:45 pm-4:00 pm

2 stops32h 15m

$634

Grand JunctionSofia

GJT - SOF

GJTSOF

Grand Junction Regnl

Wed 4/1

1:20 pm-11:10 pm

2 stops24h 50m

Sofia

Sun 4/5

7:25 pm-8:27 pm

2 stops34h 02m

$647

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 4/9

12:20 pm-2:00 pm

2 stops16h 40m

Sofia

Thu 4/23

7:00 am-7:58 pm

2 stops21h 58m

$649

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 12/4

3:40 pm-9:50 am

3 stops33h 10m

Sofia

Thu 12/11

5:00 am-6:05 pm

3 stops22h 05m

$667

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 11/30

5:45 pm-10:45 pm

2 stops20h 00m

Sofia

Thu 12/11

5:45 am-7:55 pm

2 stops23h 10m

$685

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 4/1

6:30 am-2:00 pm

2 stops22h 30m

Sofia

Sun 4/5

7:00 am-10:49 pm

2 stops24h 49m

$751

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Thu 4/9

11:15 am-6:40 pm

2 stops22h 25m

Sofia

Thu 4/23

6:10 am-3:35 pm

1 stop18h 25m

$780

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Colorado is in April. Flight prices, which tend to average around $535, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Sofia from Colorado during February instead. Flights to Sofia in February, while not as cheap as those in April, still average around $614.

What is the cheapest day to depart on your flight to Sofia?

According to our data, Thursday is the cheapest day to fly to Sofia from Colorado. The lowest ticket price found for a Thursday departure recently was $781. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Colorado to Sofia on a Saturday will generally be more expensive and average around $1,343. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Sofia?

In the evening is the cheapest time of day to fly from Colorado to Sofia when you can find flight prices for as low as $784. Flying to Sofia in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Sofia, so prices are often more expensive at around $1,319 per ticket.

How far in advance should I book a flight to Sofia?

You are more likely to see cheaper flights to Sofia from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $862 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Colorado for as low as $728 on momondo.

Can stopping save me money on Colorado to Sofia flights?

You could potentially save up to 6% on your flight if you consider stops on a Colorado to Sofia flight.

Cheap Colorado to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sofia

Direct flights	None

There are no direct flights from Colorado to Sofia. There are no popular flight routes from Colorado to Sofia.

Search flight deals

When did momondo last update prices for flights from Colorado to Sofia Airport?
Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Sofia Airport?
As of November 2025, there are 3 operators available to choose from for flights from Colorado to Sofia Airport.
How old do you have to be to fly from Colorado to Sofia Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Sofia

Compare and see reviews for airlines that fly from Colorado to Sofia with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $522	Free Cancellation	Rating 7.3 4,031 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $616	Free Cancellation	Rating 6.8 7,555 reviews	Search Lufthansa flights
United Airlines	PriceFrom $656	Free Cancellation	Rating 7.4 9,003 reviews	Search United Airlines flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Sofia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sofia from Colorado.

Can I find flights from Colorado to Sofia with flexible booking policies on momondo?

Flights from Colorado to Sofia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Sofia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Colorado to Sofia.

I’m not ready to book a flight from Colorado to Sofia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Sofia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sofia and let you know when they change.

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Cheap flights from Colorado to Sofia from $286

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Sofia departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Lufthansa flights from Colorado to Sofia

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Turkish Airlines flights from Colorado to Sofia

Our best Turkish Airlines deals on Colorado to Sofia flight tickets

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How to get the cheapest flight ticket from Colorado to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sofia?

What is the cheapest day to depart on your flight to Sofia?

What is the cheapest time of day to depart on your flight to Sofia?

How far in advance should I book a flight to Sofia?

Can stopping save me money on Colorado to Sofia flights?

You could potentially save up to 6% on your flight if you consider stops on a Colorado to Sofia flight.

What is the cheapest airline that flies from Colorado to Sofia?

Turkish Airlines, Lufthansa, and British Airways are the most popular carriers operating from Colorado to Sofia

What airlines fly to Sofia?

How long does it take to fly to Sofia?

Cheap Colorado to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sofia

Direct flights

When did momondo last update prices for flights from Colorado to Sofia Airport?

How many operators does momondo search for flights from Colorado to Sofia Airport?

How old do you have to be to fly from Colorado to Sofia Airport?

What documentation or ID do you need to fly to Sofia Airport?

Best airlines flying from Colorado to Sofia

Compare and see reviews for airlines that fly from Colorado to Sofia with momondo

Traveling to a place near Sofia?

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Sofia?

Can I find flights from Colorado to Sofia with flexible booking policies on momondo?

How can momondo help me find flights from Colorado to Sofia?

I’m not ready to book a flight from Colorado to Sofia right now. Can momondo alert me if prices change?

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo